Eliminate redundancy surrounding `rec_with_table`

[reikookamoto]

I have been browsing through the source code of flow packages and noticed that the rec_with_table function is defined in multiple places:

• https://github.com/Big-Life-Lab/recodeflow/blob/master/R/recode-with-table.R
• https://github.com/Big-Life-Lab/cchsflow/blob/master/R/recode-with-table.R

After chatting with @DougManuel and @yulric, it appears that this duplication is due to the order in which the different flow packages were developed (i.e., cchsflow, elderflow, followed by recodeflow). Ideally, some refactoring needs to be done such that database-specific flow packages are mainly concerned with the variable sheet, details sheet, and derived variable functions, and recodeflow is taken as a dependency such that recodeflow::rec_with_table can be used with consistency.